ought to denature
Regular verb: denature - denatured- denatured

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to denature
you ought to denature
he ought to denature
we ought to denature
you ought to denature
they ought to denature 	I ought to be denaturing
you ought to be denaturing
he ought to be denaturing
we ought to be denaturing
you ought to be denaturing
they ought to be denaturing	I ought to have denatured
you ought to have denatured
he ought to have denatured
we ought to have denatured
you ought to have denatured
they ought to have denatured	I ought to have been denaturing
you ought to have been denaturing
he ought to have been denaturing
we ought to have been denaturing
you ought to have been denaturing
they ought to have been denaturing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to denature
you ought not to denature
he ought not to denature
we ought not to denature
you ought not to denature
they ought not to denature 	I ought not to denaturing
you ought not to denaturing
he ought not to denaturing
we ought not to denaturing
you ought not to denaturing
they ought not to denaturing	I ought not to have denatured
you ought not to have denatured
he ought not to have denatured
we ought not to have denatured
you ought not to have denatured
they ought not to have denatured	I ought not to have been denaturing
you ought not to have been denaturing
he ought not to have been denaturing
we ought not to have been denaturing
you ought not to have been denaturing
they ought not to have been denaturing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I denature?
ought to you denature?
ought to he denature?
ought to we denature?
ought to you denature?
ought to they denature? 	ought to I be denaturing?
ought to you be denaturing?
ought to he be denaturing?
ought to we be denaturing?
ought to you be denaturing?
ought to they be denaturing? 	ought to I have denatured?
ought to you have denatured?
ought to he have denatured?
ought to we have denatured?
ought to you have denatured?
ought to they have denatured? 	ought to I have been denaturing?
ought to you have been denaturing?
ought to he have been denaturing?
ought to we have been denaturing?
ought to you have been denaturing?
ought to they have been denaturing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to denature?
ought you not to denature?
ought he not to denature?
ought we not to denature?
ought you not to denature?
ought they not to denature? 	ought I not to be denaturing?
ought you not to be denaturing?
ought he not to be denaturing?
ought we not to be denaturing?
ought you not to be denaturing?
ought they not to be denaturing? 	ought I not to have denatured?
ought you not to have denatured?
ought he not to have denatured?
ought we not to have denatured?
ought you not to have denatured?
ought they not to have denatured? 	ought I not to have been denaturing?
ought you not to have been denaturing?
ought he not to have been denaturing?
ought we not to have been denaturing?
ought you not to have been denaturing?
ought they not to have been denaturing?